<html>

<head>
  <title>Mattermost Desktop testing html</title>
</head>

<body>
  <h1>window.open() test</h1>
  <p>
    <input type="button" value="window.open()" onclick="open_window()">
  </p>
  <script>
    function open_window() {
      window.open('./test.html');
    }

  </script>
</body>

</html>
